(19)

(11)

EP 2 340 629 A1

(12)

(43) Date of publication: 06.07.2011 Bulletin 2011/27 (21) Application number: 08804595.0 (22) Date of filing: 23.09.2008

(51) International Patent Classification (IPC):  H04L 1/18(2006.01) H04L 1/20(2006.01) (86) International application number: PCT/EP2008/062678 (87) International publication number: WO 2010/034339 (01.04.2010 Gazette 2010/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (71) Applicant: Nokia Siemens Networks Oy 02610 Espoo (FI)	(72) Inventors: JUNTTI, Markku FI-90540 Oulu (FI) KANGAS, Maria FI-90650 Oulu (FI)